A aeon weight



UNITED STATES PATENT OFFICE.

AARON WRIGHT, OF PHCENIX MILLs, NEW YORK, ASSIGNOR OF ONE-HALF 'ro EDWIN GROAT, on sAME PLACE.

DEVICE FOR SHARPENING THE BLADES F FABRlC-SEAM TRl M MERS.

SPECIFICATION forming part of Lettersfatent No. 291,?59, dated January 1, 1884.

' Application filed October 24, 1883. No model.)

To all whom it may concern:

Be it known that I, AARON WRIGHT, a citizen of the United States, residing at Phoenix Mills, in the county of Otsego and State of New York, have invented certain new and useful Improvements in Devices for Sharpening the Blades of Fabric-Seam Trimmers, of which the following is a specification, reference being had therein to the accompanying drawmgs.

This invention has relation toimprovements in devices for sharpening the cutting blades or disks of fabric-seam trimmersused in connection with sewing-machines, and is more es pecially adapted for use in connection with a trimmer for which I have this day made ap- I plication for Letters Patent, and in the drawings hereto annexed have shown sufficient thereof to illustrate the manner of its attaoh- 'ment and operation.

In the accompanying drawings, Figure l is an elevation; Fig. 2, a plan, and Figs. 3 and 4 detail views. I

A indicates a frame or casting, which may be so secured to the table or other convenient part of a machine that the roller carrying the cuttingdisk will be brought on a level, or nearly so, with the cloth-plate of the machine, so as to receive the cloth as it leaves the needle. To the standards a a of this frame are secured lateral loops or brackets B B, for supporting the horizontal bar 0 of the sharpeningapparatus. This bar 0 is ,provided on its upper edge with a transverse elongated slot, 12, the

, the bar 0, carrying the sharpening material, in its normal positionwill stand off from the cuttingdisk F, as shown in Figs. land 2. The forward end of the bar 0 is provided with a longitudinal groove, i, which is preferably of dovetail form, for receiving the emery or other suitable sharpening material, 1%,

The opposite end of this bar may be provided with a handle, E, l or other means by which it may be conveniently grasped by the operator.

This device can be very cheaply manufactured, it is simple in construction, and can be applied to a trimmer without impairing its validity in any manner whatever.

When the cutting apparatus is in operation, the sharpener assumes the position shown in Fig. l of the drawings; but when it is found desirable to sharpen the cutting-disk, the bar 0 is grasped at its handle portion, and the sharpening material brought in engagement with the disk, as shown by dotted lines in Fig. 2.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. The bar 0, having the recess b,the hook f, the groovet', for holding the sharpening material, and perforation for receiving the setscrew, in combination with the loops B B, spring D, and hook g of a seam trimmer frame, substantially as specified.

2. The combination, with the cutting-disk and frame A of a fabrioseam trimmer having the loops B, of the sharpening apparatus consisting of the bar 0, having recess b, handie E, hook f, groove 1', for receiving the sharpening material, the threaded perforation for receiving the set-screw, andthe spiral spring D, all adapted to operate substantially as specified.

In testimony whereof I have afliXed my signature in presence of two witnesses.

AARON WRIGHT.

Witnesses GEORGE BROOKS,

O. R. BURcH.

and a threaded perforationto receive a thumbscrew for holding the said material in place. 

